Starfleet Headquarters Classified Site Report
                          Planet Earth

  Located in sector 001, the planet Earth is the very heart of the
  federation.  With headquarters located there, it is imperative that
  Earth be protected at all costs

  Earth's self-defense systems are more than adequate, and although
  they are capable of mass destruction, it is virtually impossible to
  defend on a planetary scale.  Due to its size, Earth's defenses are
  mostly compacted in certain areas and are therefore easy to destroy.

  Without Earth and her central command, Starfleet's very existence
  could be compromised.